Disk mirroring (RAID) is a backup strategy used to create a second copy of data in real time - Scottish Highers Computing Science - Question 4 - 2018
Question 4
Disk mirroring (RAID) is a backup strategy used to create a second copy of data in real time.
Describe two drawbacks of using mirroring (RAID) as a backup strategy.
Worked Solution & Example Answer:Disk mirroring (RAID) is a backup strategy used to create a second copy of data in real time - Scottish Highers Computing Science - Question 4 - 2018
Step 1
Drawback 1: Malware Risk
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Answer
One significant drawback of disk mirroring is that if malware infects one drive, it is automatically mirrored onto the backup drive. This means that both the primary and backup copies of the data could become compromised, making recovery difficult.
Step 2
Drawback 2: Increased Costs
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Another drawback is the additional cost of maintaining duplicated hard drives. RAID systems require at least two drives, and this expense can be significant, especially for large amounts of data. Additionally, there may be higher energy consumption due to writing to multiple disks simultaneously.
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